Size Chart & Fit Info

Back Measurement
Points of Measurement
A. wheelchair width
B. outside shell width
C. width of support surface
D. width of support surface between laterals
E. width of support surface between offset laterals

Size Chart and Fit Information

Below is a simple guide to properly fit back systems on wheelchairs. When choosing a back system, you need to consider the width of the wheelchair, back shell, support surface and type of laterals.

Evolution Back Deep™

Size A B C
  To fit wheelchair widths Outside width of shell Width of support surface
14 14" & 15" 14" 13.25"
15 15" & 16" 15" 14.25"
16 16" & 17" 15.75" 15"
17 17" & 18" 17" 16.25"
18 18" & 19" 18" 17.25"
20 19" & 20" 20.25" 19.5"

Talon™

Size C
  Width of support surface
14 10.5"
15 11.5"
16 12.5"
17 13.5"
18 14.5"
20 16.5"

Evolution Back™ and Evolution Back™ Tall

Size A B C D E
  To fit wheelchair widths Outside width of shell Width of support surface Width of support surface with laterals Width of support surface with offset laterals
12 11" & 13" 9.375" 8.625" 7.375"- 7.875" 5.875"- 6.375"
14 13" & 15" 11.375" 10.625" 9.375"- 9.875" 7.875"- 8.375"
15 14" - 16" 12.25" 11.5" 10.25"- 10.75" 8.75"- 9.25"
16 15" - 17" 13.25" 12.5" 11.25"- 11.75" 9.75"- 10.25"
17 16" - 18" 14.25" 13.5" 12.25"- 12.75" 10.75"- 11.25"
18 17" - 19" 15.25" 14.5" 13.25"- 13.75" 11.75"- 12.25"
20 19" & 20" 17.25" 16.5" 15.25"- 15.75" 13.75"- 14.25"
22* 21" & 22" 19.25" 18.5" 17.25"- 17.75" 15.75"- 16.25"
24* 23" & 24" 21.25" 20.5" 19.25"- 19.75" 17.75"- 18.25"

 

*Note: 22" and 24" are not available in Tall or Deep models.